Re: [Json] First two characters

["Pete Cordell" <[e-mail]>]

----- Original Message From: "Nico Williams"
> On Fri, Nov 22, 2013 at 07:59:36PM +0100, Bjoern Hoehrmann wrote:
>>   Now that string literals can occur at the top level, the statement in
>> 8.1 http://tools.ietf.org/html/draft-ietf-json-rfc4627bis-07 "the first
>> two characters of a JSON text will always be ASCII characters" is
>> incorrect and needs to be changed alongside changing the JSON-text
>> grammar.
>
>...
>   xx XX        UTF-8    (XX > 0)
>   xx 00 ZZ ZZ  UTF-16LE (ZZ can be any value, but both ZZs can't be 0)
>   00 xx        UTF-16BE
>   00 00 00 xx  UTF-32BE
>   xx 00 00 00  UTF-32LE

I don't see why that offers any benefit over the following table presented 
earlier:

       xx xx -- --  UTF-8
       xx 00 xx --  UTF-16LE
       xx 00 00 xx  UTF-16LE
       xx 00 00 00  UTF-32LE
       00 xx -- --  UTF-16BE
       00 00 -- --  UTF-32BE

What it does demonstrate is that if we are not restricting JSON to UTF-8 and 
only UTF-8 then a table of some description would be very useful in the 
interests of interoperability.

Pete Cordell
Codalogic Ltd
C++ tools for C++ programmers, http://codalogic.com
Read & write XML in C++, http://www.xml2cpp.com